Based on comb and wattle growth for 10 weeks, these look like male. But, I'm not great at sexing M/F BR - I only have female BR. Since all look similar you don't have a comparison. FWIW, barred chickens that are male get 2 copies of the barred gene. So, double wide white bars = lighter colored chickens (if compared to female barred rocks). Saddle feathers will show up around 12+ weeks if male.
The WORST luck. I’ve also got 4 ameraucanas that are apparently all boys, too. One faverolles, boy. Four lavender orpingtons which I THINK are two and two...and four BCMs who I’m still not sure but definitely at least one roo.
Of 17 chicks, I so far only have *probably* two hens. I kinda want to cry haha